tonnes Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a unit of weight equivalent to 2000 pounds in the United States and 2240 pounds in Great Britian Chiefly British. Example Sentence The ship can carry tonnes. Synonyms long ton; short ton; 2000 lbs Antonyms once; gram Hear It! Say It! Write It! tonnes Switch to cursive Start Share with your friends: